The 411S doesn't save it's booktype setting, so the Liteon bitsetting tool isn't the answer, because the moment it's depowered your back to no bitsetting again. But even if it did the bitsetting flag in the 411S is common to both +R and +RW, so unfortunately you can't enable just one and not the other :sad:.

I could possibly do you a custom version, with +R only bitsetting, if you sent me the drives firmware but load it into OmniPatcher first and make sure the auto bitsetting option is not greyed. If it's greyed the firmware does not support bitsetting anyway.